Can someone translate this to Spanish but make sure that it is so someone who is learning spanish can read this not someone who knows spanish very well:
Luis can study longer and pay more attention in class and in their homework to improve their grades I think that he could also ask the teacher for help if he needed it or to stay after school for help because if he does not do this then I will be very hard for and he will struggle a lot and maybe fail the grade or class
-Luis should try to talk with other students to know what things they have in common so that they can make friends and not just be there and having no one to talk to and no friends, and once he gets friends he could ask them on the homework and school work if he has any questions